Weight



UNITED STATES PATENT OFFICE.

JAMES J. JOHNSTON, OF OOLUMBIANA, OHIO, ASSIGNOR TO THE UNITED STATESIMPROVEMENT COMPANY, (LIMITED,) OF SAME PLACE.

SASH-WEIGHT.

SPECIFICATION forming part of Letters Patent No. 273,238, dated February2'7, 1883.

Application filed February 11 1882.

To all whomit may concern Be it known that 1, JAMES J. JOHNSTON, ofOolumbiana, in the county of Oolumbiana and State of Ohio, have inventeda certain new and useful Improvement in Sash-Weights, and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked 1o thereon.

My invention relates to an improvement in sash-weights; and it consistsin constructing it in sections and securing said sections togetherthrough the medium of a metallic tube,

15 as will hereinafter more fully and at large appear.

To enable others skilled in the art with which my invention is mostnearly connected to make and use the same, I will proceed to describeits construction and operation.

In the accompanying drawings, which form part of my specification,Figure l is a vertical section of a sash-weight constructed in sections,and the several sections secured together through the medium ofametallic tube, and the cord passing up through said tube. Fig. 2 is aside elevation of the sash-weight. Fig. 3 is a perspective view of oneof the sections. Fig. 4 represents a match-plate, with a series of 0patterns of th sections secured thereto for the purpose of illustratingthe method of molding the sections. Fig. 5 represents the method offorming the tube for holding the sections of the sash-weight together.

Reference being had to the accompanying drawings, A represents thebottom, B the top, and O the intermediate sections, of the sashweight.The sections A and B are recessed at F and G, as shown in Fig. 1, forthe purpose 0 of spreading the ends of the tube H for bolding theseveral sections in juxtaposition, the

recess F being made sufficiently large to receive the knot I in the cordJ, so as to prevent it causing lateral tilting of the sash-weight.

Each section is provided with a spherical projection, D, in its upperend, and a corresponding concavity, K, in its lower end, each sectionhaving an opening, E, through it.

The sections are constructed of cast-iron-by the molding process, andfor ease and facility of molding, the patterns are arranged on amatch-plate, as shown in Fig. 4, for what is (No model.)

known in the art as open sand or snapflask molding, all of which is wellunderstood in the art of molding and casting, and is stated '55 in thisspecification for suggesting a means for constructing the sash-weightcheaply and with facility.

The weight of sections A and B being as certained, each of theintermediate sections, O, should be of uniform weight--that is to say,each of the same weight, and by preference should weigh one pound, whichwill enable manufacturers to construct the sash-weight of any number ofpounds desired, it being a matterof observation that a sash-weight isalways ordered as containinga given number ofpounds without anyfractional part of a pound.

The tube H is formed from a flat strip of thin metal bent into thetubular form, as indicated in Fig. 5, the'two side edges of the stripnot being united,which will allow the tube to contract sufticiently forthe sections to pass over it, and at the same time cause the outer wallsof the tube to press against the walls of the opening E. The length ofthese tubes will be in proportion to the 'number of pounds required inthe sash-weight, and the manufacturer will readily ascertain therequired length of said tube after constructing a single sashweight of agiven number of pounds. The ends of the tube H are spread or swaged tothe contour of the cavity in the lower end or side of section A and theupper end of section B, as shown in Fig.1. 8

The advantage otconstructing a sash-weight as hereinbefore describedwill be apparent tothe skillful mechanic without further description.

1 am aware that it is not new to construct a sash-weight in sections,and therefore do not claim, broadly,such construction ofa sashweight;but

What I do claim is- In a sash-weight, the combination, with the sectionsA B O, of a tube having bell-mouthed ends, upon which said sections aremounted and connected together, and through which the sash-cord passes,as herein shown and described.

JAMES J. JOHNSTON. v Witnesses:

T. D. D. OURAND, DE WITT 0. ALLEN.

